Strap tensioning buckle

A strap tensioning buckle for a straplike pull element on ski boots or the like, said buckle comprising a tensioning lever turnable into a tightening position and hinged for movement about a hinge axis onto an eye fixed with a base plate fixed on the boot or on an element connected to said boot, and further, comprising two arms adjacent to the hinge axis and distant from each other by a clearance equal at least to the width of said pull element and allowing between them a passageway for said pull element, and furthermore comprising a clamping device for holding the pull element, said tensioning buckle being characterized in that

• the tensioning lever in the portion opposite to the hinge axis is provided with a clamping lever and a cover plate covering said pull element,
• that the clamping lever is pivotally mounted in the tensioning lever, its pivotal axis being substantially parallel to the hinge axis of the tensioning lever, and its free end being directed opposite to the direction of the tensile load acting on the pull element,
• that the length of the clamping lever is greater than the perpendicular distance between its pivotal axis and the lower surface of the cover plate, diminished by the thickness of the pull element, and
• that at least a portion of the surface of the pull element is provided with a toothed profile matching with a counter-profile on the clamping lever.